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  <title>Description of ambf</title>
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<h1>ambf
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<h2><a name="_name"></a>PURPOSE <a href="#_top"><img alt="^" border="0" src="../up.png"></a></h2>
<div class="box"><strong>Ambiguity function</strong></div>

<h2><a name="_description"></a>DESCRIPTION <a href="#_top"><img alt="^" border="0" src="../up.png"></a></h2>
<div class="fragment"><pre class="comment"> Ambiguity function

 Computes the ambiguity function of the input signal. An analytic
 signal generator is called if the input signal is real. This version
 takes advantage of the property K(n,-m)=K*(n,m) to increase
 calculation speed.

 Usage: 

     af = ambf( signal, lag_res, window_length )


 Parameters:

     af

      The computed ambiguity function representation. size(af) will
      return [a, b], where b is the next largest power of two above
      (2*window_length), and a is equal signal length.

    signal

      Input one dimensional signal to be analysed. An analytic signal
      is required for this function, however, if signal is real, a
      default analytic transformer routine will be called from this
      function before computing the ambiguity function.

    window_length

      The number of signal samples used for analysis.

    lag_res

      The number of lag to skip between successive slices of
      the analysis.



  See Also: <a href="analyt.html" class="code" title="">analyt</a></pre></div>

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